index.js

"use strict"
Object.defineProperty(exports, "__esModule", { value: true })
function parseMaxAge(value = 0) {
	if (value >= 0 && Number.isFinite(value)) {
		return Math.floor(value)
	} else {
		throw new Error(`Expect-CT: ${JSON.stringify(value)} is not a valid value for maxAge. Please choose a positive integer.`)
	}
}
function getHeaderValueFromOptions(options) {
	const directives = [`max-age=${parseMaxAge(options.maxAge)}`]
	if (options.enforce) {
		directives.push("enforce")
	}
	if (options.reportUri) {
		directives.push(`report-uri="${options.reportUri}"`)
	}
	return directives.join(", ")
}
function expectCt(options = {}) {
	const headerValue = getHeaderValueFromOptions(options)
	return function expectCtMiddleware(_req, res, next) {
		res.setHeader("Expect-CT", headerValue)
		next()
	}
}
module.exports = expectCt
exports.default = expectCt